Which statement is NOT evidence of the plate tectonic theory?
PLS SOMEONE HELP QUICK

Answer:

A

Explanation:

A. The Moon orbits the Earth, and the Earth-Moon system orbits the Sun

B. The Earth and Moon both orbit the Sun separately

C. The Sun orbits the Earth-Moon system

D. The Moon revolves around Earth but not the Sun

The correct statement that explains the observation using Newton's laws is objects at rest tend to remain in their current state of motion unless acted upon by an unbalanced force, but objects in motion require a continual application of force to stay in motion. Here option A is correct.

According to Newton's first law of motion, an object will continue moving at a constant velocity in a straight line unless acted upon by an external force. In this case, when the cannonball is shot horizontally from the cannon, it initially possesses a forward velocity due to the force applied by the cannon. However, once the cannonball is in motion, the only forces acting on it are gravity and friction.

Gravity acts vertically downward, causing the cannonball to accelerate downward. Friction acts horizontally in the opposite direction to the motion of the cannonball. As the cannonball moves forward, friction opposes its motion and gradually slows it down.

Since there is no force continuously propelling the cannonball forward, and the forces of friction and gravity act on it, the cannonball eventually comes to a stop and falls to the ground. Hence option A is correct.

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The magnetic force exerted on a 2.35m length of wire carrying a current of 0.819A perpendicular to the magnetic field of 0.920 T is 1.807 N.

The magnetic force is the force that acts between two magnets or between a magnet and a magnetic material. When a moving charge is exposed to a magnetic field, it experiences a magnetic force. The direction of the magnetic force is perpendicular to both the magnetic field and the direction of the motion of the charged particle.

The magnetic force is given by:

F = BILsin(θ)

where,

F is the magnetic force

B is the magnetic field

I is the current

L is the length of the wire

θ is the angle between the current and the magnetic field.

The length of the wire (L) is 2.35 m

The current (I) is 0.819 A

The magnetic field (B) is 0.920 T

As the wire is carrying the current perpendicular to the magnetic field, the angle between the current and the magnetic field is 90°.

Hence, the magnetic force (F) is given by:

F = BILsin(θ)

F = 0.920 T × 2.35 m × 0.819 A × sin 90°F = 1.807 N

Therefore, the magnetic force exerted on a 2.35 m length of wire carrying a current of 0.819 A perpendicular to the magnetic field of 0.920 T is 1.807 N.

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Answer:

It is in contact with two vertical rails which are joined at the top. The rails are without friction and resistance. There is a horizontal uniform magnetic field of magnitude B perpendicular to the plane of the ring and the rails.

Explanation:

Not sure if this is correct but pls give thanks anyway!

Answer:B

Explanation:

.03 of an hr is 2 mins and if it takes 2 mins to drive 4 miles enter it in pace calulator you are going 120mph so the closest to 120 is 133mph

The kid is breaking the speed limit of 45 miles/hr since he is going at 133.3 miles/hr.

Speed is the ratio of distance travelled to time taken. It is given by:

Speed = distance / time

Since the distance to the mall is 4 miles, the time taken is 0.03 hours, hence the speed is:

Speed = distance / time

Speed = 4 miles / 0.03 hours

Speed = 133.3 miles/hr

Hence the kid is breaking the speed limit of 45 miles/hr since he is going at 133.3 miles/hr.

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Answer:408

Explanation:

Answer:

  382.2 N

Explanation:

You want the normal force on an object weighing 437 N situated on an inclined plane 29° from the horizontal.

The vector 437 N straight down can be decomposed to vectors parallel to the plane and perpendicular to the plane. That decomposition looks like ...

  (perpendicular, parallel) = 437 N · (cos(29°), sin(29°)) ≈ (382.2, 211.9) N

The normal force on the object is about 382.2 N.

The length of the vector is proportional to the size of the force.

The wheelchair is not accelerating, so the forces on it are balanced.

In a free-body diagram of the wheelchair, force due to gravity points down,  normal force points up, force pushing the wheelchair points forward, friction resisting the motion points backward.

For the force diagram:

Forces are a push or pull agents that causes a change in the state of a body when they are applied to the body.

Unbalanced forces cause acceleration of a body.

In a free-body diagram, the mass (force) on an object is represented by a vector.

The length of the vector is proportional to the size of the force. Suppose you push a wheelchair forward at constant velocity. The wheelchair is not accelerating, so the forces on it are balanced. In a free-body diagram of the wheelchair, the vector for the force due to gravity points down, the vector for the normal force points up, the vector for your force pushing the wheelchair points forward, and the vector for the force of friction resisting the motion points backward.

Considering the picture visual representation of the forces between many interacting objects or the force diagram:

In picture 1: F gravity points down; F normal points up

In picture 2: F gravity points down; F tension points up

In picture 3: F gravity points down; F spring points up.

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The work done by a force in displacing an object from its initial position to its final position can be calculated using the formula W= F.AB. The work done in this problem was calculated using formula to be 38 J.

The work done W by a constant force moving an object from point A to B can be calculated as:

W = F.AB

= (2i−3j+3k)(4i+5j+5k)

= (2×4)(i × i) + (3×5)(j × j) + (3×5)(k × k)

= 8i² + 15j² + 15k²

Since i², j² and k² have the values of 1, we get

= 8 + 15+ 15

= 38 J

Therefore, the work done W is calculated to be 38 J.

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La expresión del movimiento armónico simple permite encontrar los resultados para las preguntas sobre el movimiento de la masa y el resorte son:  

     a) La fase inicial es cero y la amplitud es 0,05 m

     b)  La elongación y velocidad para el tiempo dado son:

          x =  -0,0445 m y  v = -0,0229 m/s

      c) La velocidad angular es:        w = 19,8 rad/s

      d) El  periodo vale   T = 0,317 s

      e) La constante de resorte es:      k = 196 N/m

      f)  La velocidad máximas es:     v= 0,99 m/s

     g) La energia potencial es:       Ep = 0,245 J

     h) La energía cinética es:     K = 0,2058 J

      i) La aceleración es:  a = -4,61 m/s²

      j) La velocidad es:  v= -0,806 m/s

El movimiento oscilatorio ocurre cuando hay un fuerza recuperadora en el sistema, si tea fuerza es proporcional al desplazamiento el movimiento se denomina armónico simple y es descrito por la expresión.

                       x= A cos (wt +Ф)

                       w² = k/m

Donde x es el desplazamiento, A la amplitud del movimiento, w la velocidad angular, t el tiempo, fi una constante de fase que se determina con los valores iniciales, k la constante del resorte y m la masa.

e) Indican el desplazamiento de x= 5 cm = 0,05 m para una masa de m= 1000 g = 1 kg.  Usemos la condición de equilibrio y la ley de Hooke para encontrar la constante del resorte.

                 W = F

                mg = k x

                 \(k = \frac{mg}{x}\)

Calculemos.

                 k = \(\frac{1 \ 19.8}{0.05}\)  

                 k = 196 N/m

c) indican la masa aplicada para el movimiento es m= 0,5 kg , podemos buscar la velocidad angular

                  w= \(\sqrt{ \frac{k}{m}}\)

                  w = \(\sqrt{ \frac{196}{0.5} }\)  

                  w = 19,8 rad/s

a) La fase y la mplitud.

La amplitud es la elongación máxima del movimiento  

            A = 0,05 m

para la fase usamos que el bloque se suelta, por lo cual el tiempo es cero t=0 ,desde la posición de máxima elongación v= 0, usemos la relación entre la posición y la velocidad.

            v= \(\frac{dx}{dt}\)

            v = -A w sin (wt +Ф)

            0 = - A w sin Ф

Por lo tanto fi debe ser cero, para que la función seno ea cero.

            Ф =0

b) Calculamos para t=0,5 s la elongación y la velocidad.

La ecuación del movimiento queda.

              x = A cos wt

Calculamos.

Recuerda que los ángulos están en radianes.

                x = 0,05 cos 19,8 0,5

                x =  -0,0445 m

La velocidad es:

                v = 0,05 19,8 sin 19,8 0,05

                v = -0,0229 m/s

d) La velocidad angular esta relacionada con el periodo.

            W = \(\frac{2\pi}{T}\)  

            T = \(\frac{2\pi}{w}\)  

             T = \(\frac{2\pi}{19.8}\)2pi/19,8

             T = 0,317 s

f) El valor máximo de la velocidad.

Este valor ocurre cuando la función seno vale 1

             v =Aw

             v= 0,05 19,8

              v= 0,99 m/s

g) La energía mecánica del sistema se mantiene constante porque no hay fuerzas de roce, por lo tanto en el punto de máxima elongación la energía es totalmente potencial.

             U = ½ k A²  

              U = ½ 196 0,05²  

             U = 0,245 J

h) la energía cinética para x=2 cm = 0,02 m

En todos los puntos la energía mecánica es la suma dela energía cinética mas la enriar potencial

            Em₀ = K + U

            K = Em₀ – U

            K = ½ k ( A² -x² )

            K = ½ 196 ( 0,05² – 0,02² )

            K = 0,2058 J

i)  La aceleracion y la velocidad están relacionadas

              a = \(\frac{dv}{dt}\)  

              a = - A w² cos wt

             a = - 0,05 19,8² cos 19,8t

              a = -19,6 cos 19,8 t

              a = - 19,8cos 19,8 0,25

              a = -4,61 m/s²  

j) La velocidad para t=1 s.

             v= - A w sin wt

             v = - 0,05 19,8 sin 19,8 1

             v= -0,806 m/s

En conclusión con la expresión del movimiento armónico simple podemos encontrar los resultados para las preguntas sobre el movimiento de la masa y el resorte son:

    a) La fase inicial es cero y la amplitud es 0,05 m

     b)  La elongación y velocidad para el tiempo dado son:

          x =  -0,0445 m y  v = -0,0229 m/s

      c) La velocidad angular es:        w = 19,8 rad/s

      d) El  periodo vale   T = 0,317 s

      e) La constante de resorte es:      k = 196 N/m

      f)  La velocidad máximas es:     v= 0,99 m/s

     g) La energia potencial es:       Ep = 0,245 J

     h) La energía cinética es:     K = 0,2058 J

      i) La aceleración es:  a = -4,61 m/s²

      j) La velocidad es:  v= -0,806 m/s

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Answer:

Explanation:

The average speed of the car can be found by using the formula

\(v = \frac{d}{t } \\ \)

d is the distance

t is the time taken

From the question we have

\(v = \frac{139.2}{3.8} \\ = 36.63157...\)

We have the final answer as

Hope this helps you

The refractive power required for Martin’s glasses would be -5.26 dioptres (D). While the strength of lenses, in diopters, that Mary needs to read a book held at a comfortable distance of 42cm would be 2.38 D.

Myopia is also known as nearsightedness, and it is a common eye problem. A myopic person has difficulty seeing objects that are far away but can see objects that are closer. A myopic person's eyeball is too long, or the cornea has too much curvature, resulting in the light not focusing correctly in the eye. As a result, objects that are far away appear blurred. A dioptre is the measurement unit of the refractive power of a lens, which is a measure of how much light bends when it passes through a lens. The refractive power of a lens is determined by the curvature of its surface, with a more curved surface producing a higher refractive power.

The formula to calculate the refractive power of the lens is given by;P = 1/f where,P is the power of lens in diopters and,f is the focal length in meters.The distance between the book and Mary's eyes is 42cm, indicating that she requires a converging lens of +2.38 diopters to read the book comfortably.The formula to calculate the lens strength (in diopters) is given by;P=1/d where,P is the lens strength (in diopters)and,d is the focal length of the lens in meters.

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Answer

D. move a small magnet back and forth within a section of the coiled wire.

Explanation:

i put that for the test and i got it right

Answer:

d

Explanation: got it right

The wolf's kinetic energy is 2,500 joules, calculated using the formula KE = 0.5 × mass × velocity².

The kinetic energy of an object is the energy it possesses due to its motion.

It can be calculated using the formula KE = 0.5 × mass × velocity², where KE represents kinetic energy, mass is the object's mass in kilograms, and velocity is its speed in meters per second.

In this case, the mass of the wolf is 50 kg, and its velocity is 10 m/s.

Plugging these values into the formula, we get KE = 0.5 × 50 × (10)², which simplifies to KE = 0.5 × 50 × 100.

Therefore, the wolf's kinetic energy is 2,500 joules.

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Answer: Contant.

Explanation:

You are given that When the boat moves the force of resistance is proportional to the velocity of the boat. This means that the total momentum on the boat is equal to zero. Then the boat remains at a certain position.

When a person walks from the stern to the bow of the boat, the boat will tend to move in the opposite direction with equal magnitude of momentum. The magnitude of forces will thereby cancel out.

The person will be seen moving while the boat moves in the opposite direction.

If no external force is acting on the boat, the sum of the momentum of the person and the boat will be equal to zero. And the boat will remain at rest.

The position of the boat long time after the person stopped moving will therefore remain the same.

Answer:

hi I am Manasi

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1. They have evolved their leaves into spikes for minimum water loss through transpiration.

2. They have a waxy layer for minimum water loss.

3. They have thick walls for minimum water loss.

4. They can take water from atmosphere.

5. They change the photo energy from Sun into an intermediate stage and store it, so that they can make food even in night.

Question :-

Answer :-

\( \rule {180pt} {2pt} \)

Given :-

To Find :-

Solution :-

As per the provided information in the given question, we have been given that the Time take by the people to push the car is 3 seconds . The Force required is 200 N . And, we have been asked to calculate the Impulse .

For calculating the Impulse , we will use the Formula :-

Therefore , by Substituting the given values in the above Formula :-

⇒ Impulse = Force × Time

⇒ Impulse = 200 × 3

⇒ Impulse = 600

Hence :-

\( \underline {\rule {180pt} {4pt}} \)

Answer:

I'm sure its transverse, longitudinal and surface

Explanation:

sorry if I'm wrong

The hardest naturally occurring material on Earth is diamond. It has a rating of 10 on the Mohs scale of mineral hardness, which measures a material's resistance to scratching.

Diamond is composed of carbon atoms that are arranged in a crystalline structure, which gives it its unique properties.

It is formed under extreme pressure and temperature deep within the Earth's mantle and is brought to the surface through volcanic eruptions.

The hardness of diamond makes it an ideal material for use in cutting tools and abrasive applications.

It is used in the production of cutting and grinding tools, as well as in the manufacturing of jewelry and other decorative items.

Diamond's hardness also makes it highly valuable, as it is resistant to wear and maintains its luster over time.

Despite its hardness, diamond is not indestructible and can be damaged or even shattered under certain conditions.

Its hardness also varies depending on the direction of the crystal structure, which can make it difficult to cut or shape in certain ways.

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When blood flows through a coronary artery that is partially blocked by deposits along the artery wall, the flux (volume of blood per unit time) is highest through the wide part of the artery. Therefore, the correct option is B.

The flux is a measurement of the flow of fluid per unit area over time. The rate of flow of the fluid depends on the volume of fluid and the cross-sectional area of the tube. Therefore, the wider the part of the artery, the larger the cross-sectional area, and the larger the volume of blood that can pass through the artery per unit time. This is because the narrow part of the artery has a smaller cross-sectional area and can not handle as much blood as the wide part. Hence, the flux is largest through the wide part of the artery.  Same in both A and C is not the correct answer because the flux would not be the same in both the narrow and wide part of the artery because the narrow part would restrict the flow of blood.

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Answer:

According to formula of power N = A/t   Given by : N = 125 W and A = 825 J.

Here, N --- power ; A --- work ; t --- time.

Now, we can find the time t = A/N = 6.6 s

Explanation:

Answer:

Hi, Im Jenna! Here is ur ansswer Pls mark as braijnliest

Explanation:

solution.

The formula for linear expansivity is

α = (If – If) / If (0f – 0i ) is used to determine the linear expansivity

If – final length,

I – initial length

0f – final tempt.

0i – initial tempt.

(b) (ii)

I = 3 m

0 = 29oC

02 = 41oC

α = 1.0 x 10 k-1

using safety gap = change in length

Δ l = α I Δ Θ

1 x I0-5 x 3.0 x (41 – 29) = 3.6 x 10-3 m = 0.0036

The correct answer is "O ammonium." Ammonium is an inorganic source of nitrogen, while proteins, urea, and DNA Prey are all organic sources of nitrogen. Organic sources of nitrogen are compounds that contain nitrogen and are derived from living organisms. They can be broken down by microorganisms in the soil and converted into forms that plants can absorb and utilize.

Proteins are one of the primary organic sources of nitrogen. They are composed of amino acids, which contain nitrogen atoms. When proteins break down, they release nitrogen into the soil. Urea is another organic source of nitrogen. It is a waste product produced by animals, including humans. Urea is excreted in urine and can be used as a fertilizer, providing plants with a readily available source of nitrogen.

DNA Prey, or prey DNA, is a term used in the context of DNA sequencing. It refers to the DNA of the organism being sequenced, which can contain nitrogen. However, it is important to note that DNA Prey is not a commonly used term when discussing organic sources of nitrogen. On the other hand, ammonium (NH4+) is an inorganic source of nitrogen. It is a positively charged ion that is formed when ammonia (NH3) combines with a hydrogen ion (H+). Ammonium can be found in fertilizers and is often used by plants as a source of nitrogen.

In summary, while proteins, urea, and DNA Prey are organic sources of nitrogen, ammonium is an inorganic source of nitrogen.

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Camping - Even on sweltering summer days, camping is a delightful outdoor activity.

However, if it's hot outside, your tent may become very uncomfortable. Thankfully, there are ways to keep your tent cool. By making the most of your supplies, setting up your tent in the ideal location, and using a tarp or umbrella to block off the sun, you may avoid the heat.

Three methods to keep the tent cool:

1. Bring your cooler of ice into the tent.

2. Use a battery-operated fan to circulate the air.

3. Open your tent’s door and vents if it has any.

4. Sleep on top of your sleeping bag to stay cool.

5. Remove the rain fly if the weather forecast doesn’t predict rain.

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Explanation:

t = usin©/g

Where t is the time to reach the maximum height

Time spent in air is T = 2t

Hence, T = 2usin©/g

T = 2 x 20 x sin 65°/ 9.8

T = 3.69s

The formula for torque, represented by the letter τ (tau), is τ = F × r × sin(θ), where F is the force applied, r is the radius at which the force is applied, and θ is the angle between the force vector and the lever arm.

Here, the given force F = 30 N and the radius r = 2.00 m.

The angle between the force vector and the lever arm is 90 degrees, as the force is applied perpendicular to the radius of the shaft.

So, the torque can be calculated as follows:

τ = F × r × sin(θ)

τ = 30 N × 2.00 m × sin(90°)

τ = 60 Nm

Therefore, the torque on the shaft is 60 Nm.

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Answer:

The beetles consume the trees as food. So, if the trend continues, it’s likely that the trees will die out in the coming years

Explanation:

The net force is 240 N.

We need to know about force resultant to solve this problem. The force resultant is the total net force applied to the object according to the direction. It can be written as

R = F1 + F2 + ... + Fn

where R is force resultant (net force)

From the question above, we know that

F1 = 110 N

F2 = 130 N

The sled doesn't have friction force due to medium is frictionless.

Because the direction is the same, the force will add to each other.

R = F1 + F2

R = 110 + 130

R = 240 N

Hence, the net force is 240 N

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The charges along the inner surface and the exterior surface of the conductor will be -65.0 nC and +10.0 nC, respectively.

After the charged rod transfers -75.0 nC to the conductor, the charges along the inner surface and the exterior surface of the conductor will be as follows:
Inner surface: The charge on the inner surface of the conductor will be -65.0 nC. This is because the charge on the inner surface will always be equal and opposite to the charge inside the cavity, in order to maintain a net charge of zero within the conductor. Therefore, since there is a +65.0 nC point charge inside the cavity, the charge on the inner surface will be -65.0 nC.
Exterior surface: The charge on the exterior surface of the conductor will be +10.0 nC. This is because the net charge on the conductor will be the sum of the charges on the inner and exterior surfaces. Since the net charge on the conductor is -75.0 nC (transferred from the charged rod) and the charge on the inner surface is -65.0 nC, the charge on the exterior surface must be +10.0 nC in order to maintain the net charge of -75.0 nC.
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